ESM1 GI:208022668 endothelial cell-specific molecule 1 isoform b precursor 1 mksvlllttl lvpahlvaaw snnyavdcpq hcdsseckss prckrtvldd 50 51 cgccrvcaag rgetcyrtvs gmdgmkcgpg lrcqpsnged pfgeefgick 100 101 ehdmasgdgn ivreevvken aagspvmrkw lnpr